Operating and Service Guide
HP E-Series E9300 Power Sensors
HP Part No. E9300-90001
Printed in UK
June 1999
©Copyright 1999 Hewlett-Packard Company
Station Road, South Queensferry, Scotland, EH30 9TG, UK.
Notice The information contained in this document is subject to change without
notice. Hewlett-Packard makes no warranty of any kind with regard to this
material, including but not limited to, the implied warranties of
merchantability and fitness for a particular purpose. Hewlett-Packard shall
not be liable for errors contained herein or for incidental or consequential
damages in connection with the furnishing, performance, or use of this
material.
© Copyright Hewlett-Packard Company
All rights reserved. Reproduction, adaptation, or translation without
prior written permission is prohibited, except as allowed under the
copyright laws.
ii
Legal Information
Legal Information
Certification Hewlett-Packard Company certifies that this product met its published
specifications at the time of shipment from the factory. Hewlett-Packard
further certif ie s t h at it s calibration measu re me nts ar e tr aceable to the United
States National Ins ti tu te of Standards and Technol ogy , to the extent allowe d
by the Institute’s calibration facility, and to the calibration facilities of other
International Standards Organization members.
Warranty This Hewlett-Packard instrument product is warranted against defects in
material and workmanship for a period of one year from date of shipment.
During the warranty period, Hewlett-Packard Company will at its option,
either repair or replace products which prove to be defective. For warranty
service or repair , this product must be retu rned to a service fac ility designated
by HP. Buyer shall prepay shipping cha rges to HP and HP shall pay shippi ng
charges, duties, and tax es f or products returned to HP from anot her country.
HP warrants that its soft ware and firmwar e designat ed by HP for use with an
instrument will execut e its programming instru ctions when properly insta lled
on that instrument . HP does not warrant th at t he operation of t he i nst rume nt,
or firmware will be uninterrupted or error free
.
Limitation of Warranty
Exclusive Remedies
The foregoing warranty sh all not appl y to defect s result ing from impro per or
inadequate maintenance by Buyer, Buyer-supplied software or interfacing,
unauthorized modificat ion or misuse, ope ration outside of the environmenta l
specifications for the product, or improper site preparation or maintenance.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HP
SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND
EXCLUSIVE REMEDIES. HP SHALL NOT BE LIABLE FOR ANY
DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY
OTHER LEGAL THEORY.
iii
General Safety Information
General Safety Information
The following general sa fety preca utions must be observed d uring all phases
of operation, service and repair of this sensor. Failure to comply with these
precautions or specific warnings elsewhere in this manual violates safety
standards of design manufacture and intended use of the sensor.
Hewlett-Packard Company assumes no li abili ty for the customer’ s failure to
comply with these requirements.
The Instruction Documentation Symbol. The product is marked with this
symbol when it is necessary for the user to refer to the instructions in the
supplied documentation.
WARNING: BEFORE CONNECTING THE POWER SENSOR TO OTHER
INSTRUMENTS ensure that all instruments are connected to the protective
(earth) ground. Any interruption of the protective earth grounding will cause a
potential shock hazard that could result in personal injury.
Sound Emission Herstellerbescheinigung
Diese Information steht im Zusammenhang mit den Anforderungen der
Maschinenlarminformationsverordnung vom 18 Januar 1991.
• Sound Pressure LpA < 70 dB.
• Am Arbeitsplatz.
• Normaler Betrieb.
• Nach DIN 45635 T. 19 (Typprufung).
Manufacturers Declaration
This statem ent is provided to comply with the requirem ents of the German
Sound DIN 45635 T. 19 (Typprufung).
• Sound Pressure LpA < 70 dB.
• At operator position.
• Normal operation.
• According to ISO 7779 (Type Test).
iv
Conventions
Conventions
The following text and format conventions are used to highlight items of
safety and the operation of the associated power meter.
Safety This guide uses cautions and warnings to denote hazards.
CAUTION: Caution denotes a hazard. It calls attention to a procedure that, if not correctly
performed or adhered to, would resu l t in damage to or destruction of the instrume nt.
Do not proceed beyond a caution sign until the indicated conditions are fully
understood and met.
WARNING: Warning denotes a hazard. It calls attention to a procedure which, if not
correctly performed or adhered to, could result in injury or loss of life. Do not
proceed beyond a warning note until the indicated conditions are fully
understood and met.
Power Meter Front Panel Operation
This guide uses the fo llowing symbols to den ote power meter front panel key s
and display legends.
Front Panel Key
Softkey Label
Display Text T e xt shown in this font indicates mes s age t ext dis pl ayed
A function name in a keycap symbol indicates the use of
a key physically located on the power meter’s front
panel.
A function name in display-font indicates the use of a
key down the right side of the pow er meter ’s display
adjacent to the displayed text
by the power meter.
v
Documentation
Documentation
Sensors Covered by Manual
Related Publications
These sensors have a two-part serial number: the prefix (two letters and the
first four numbers), and the suffix (the last four numb ers). The two letters
identify the country in which the unit was manufactured. The four numbers
of the prefix are a code identifying the date of the last major design change
incorporated in your sensor. The four-digit suf fix is a se quential number an d,
coupled with the prefix, provides a unique identification for each unit
produced. The contents of this manual apply directly to all serial numbers
unless otherwise indicated.
The HP E-Series 9300 Power Sensors Operating and Service Guide is also
available in the following languages:
• English Language Operating and Ser vice Gui de - Standard
• German Language Operating and Service Guide - Option ABD
• Spanish Language Operating and Service Guide - Option ABE
• French Language Operating and Service Guide - Option ABF
• Japanese Language Operating and Service Guide - Option ABJ
• Italian Language Operating and Service Guide - Option ABZ
• Korean Language Operating and Service Guide - Option AB1
Further useful information can be found in:
• Application Note 64-1A, Fundamentals of RF and Microwave Power Measurements, available by ordering through your local HP Sales Office.
• The HP EPM Series Power Meter User’s Guide and Programming Guide.
vi
Contents
1 Introduction
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Power Meter Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
The HP E-Series E9300 Power Sensors in Detail . . . . . . . . . . . . . . . 12
Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Initial Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Checking Power Meter Firmware and DSP Revision . . . . . . . . 14
Interconnections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2 Making Measurements
Power Meter Configuration Changes . . . . . . . . . . . . . . . . . . . . . . . . 19
Measuring Spread Spectrum and Multitone Signals . . . . . . . . . . . . . 20
CDMA Signal Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Multitone Signal Measurements . . . . . . . . . . . . . . . . . . . . . . . . 22
Measuring TDMA Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Power Meter and Sensor Operation . . . . . . . . . . . . . . . . . . . . . . 23
Achieving Stable Results with TDMA Signals . . . . . . . . . . . . . 23
Achieving Stable Results with GSM Signals . . . . . . . . . . . . . . 24
Measurement Accuracy and Speed . . . . . . . . . . . . . . . . . . . . . . . . . 25
Setting the Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Measurement Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3 Specifications and
Characteristics
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Power Sensor Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4 Service
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Performance Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Standing Wave Ratio (SWR) and Reflection Coefficient (Rho)
Performance Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Contents
vii
Contents
Replaceable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Principles of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Repair of Defective Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Disassembly Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Reassembly Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Sales and Service Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
viii
1
Introduction
9
Introduction
What You’ll Find In This Chapter
This Chapter introduces you to the HP E-series E9300 power sensors, some
detail on their operation, the minimum power meter requirements and
connecting to your power meter. It contains the following sections:
• “General Information” on page 11
• “The HP E-Series E9300 Power Sensors in Detail” on page 12
• “Getting Started” on page 14
Figure 1 HP E9300A and HP E9301A Power Sensors
10
Introduction
General Information
General Information
Welcome to the HP E-series E9300 power sensors Operating and Service
Guide! This guide contains inf ormation about the in itial inspec tion,
operation, specifi cations a nd repair of the HP E-ser ies E9300 po wer sensors .
Use this guide as a supplement to the HP EPM series power meters User’s
Guides. It is 3-hole dril led to allow you to reta in it in the power meter’s
binder.
All power meter function s are detailed in the HP EPM series power meters
User’s Guide and Programming Guide, however, this guide contains
information specific to the operation of HP E-series E9300 power sensor.
Power Meter Requirements
The HP E-series E9300 power sensors are NOT compatible with the earlier
HP 430-Series, HP E1416A, or HP 70100A power meters. They are
compatible ONLY with the HP EPM series power meters. Also, not all HP
EPM series power meters are immediately compatible - your power meter
must use firmware and Digital Signal Processing (DSP) from a specific
release onwards. "Checking Power Meter Firmware and DSP Revision" on
page 14 tells you how to check your power meter and have it upgraded if
required.
11
Introduction
The HP E-Series E9300 Power Sensors in Detail
The HP E-Series E9300 Power Sensors in Detail
Most power sensors used for measuring average power employ either
thermocouple or dio de technologies. Diode based sensors frequent ly rely on
the application of correction factors to extend their dynamic range beyond
their square law response region, typically -70 dBm to -20 dBm. However,
while this technique achieves wide dynamic range capability, it is limited to
continuous wave (CW) signals outside the square law region. Modulated
signals must be padded down or at low levels, with their average and peak
power levels within the di ode square la w region, to be measured accurately.
Accurate, average power measurement of high level signals carrying
modulation cannot be obtained using a CW correction factor technique.
Specialized modulation sensors provide accurate measurements but are
bandwidth limited.
The HP E-series E9300 powe r sen sors a re true ave rage, wide dy namic r ange
RF microwave power sensors. They are based on a dual sensor
diode pair/attenuator /diode pair proposed by Sze nte et. al. in 1990
shows a block diagram of this technique.
1
. Figure 2
Low Sense
RF in
Figure 2 Simplified Block Diagram of Diode Pair/Attenuator/Diode Pair
1. US Patent #4943764, assigned to Hewlett-Packard Company
12
Low Sense
High Sense
High Sense
+
Lower Range
(-60 dBm to -10 dBm)
–
+
Upper Range
(-10 dBm to +20 dBm)
–
Introduction
The HP E-Series E9300 Power Sensors in Detail
This technique ens ures t he diodes i n th e sel ected signal path are kept i n their
square law regio n, thus the out put curr ent (and voltage) is pro porti onal to the
input power. The diode pair/attenuator/diode pair assembly can yield the
average of complex modulation formats across a wide dynamic range,
irrespective of si gnal bandwidth. The dual range Modif ied Barrier Int egrated
1
Diode (MBID)
package includes further refinements to improve power
handling allowing accurate measurement of high level signals with high
2
crest factors without incurring damage
to the sensor.
These sensors measure average RF power on a wide variety of modulated
signals and are independent of the modulation bandwidth. They are ideally
suited to the average p ower measu rement of multi- tone a nd sprea d spect rum
signals such as CDMA, W-CDMA and digital television formats. Also,
pulsed, TDMA signals can be measured within the constraints detailed in
“Measuring TDMA Signals” on page 23.
3
The results are displayed on a compatible
power meter in logarithmic (dBm
or dB) or linear (Watts or %) measurement units.
1. November 1986 Hewlett-Pac kard Journal pages 14-2, “Diode Integrated
Circuits for Millimeter-Wave Applications.
2. Refer “Maximum Power” on page 30 to for maximum power handling
specifications
3. An HP EPM-Series power meter is required as specified in the section
"Checking Power Meter Firmware and DSP Revision" on page 14.
13
Introduction
Getting Started
Getting Started
Initial Inspection
Inspect the shipping container for damage. If the shipping container or
packaging material is damaged, it should be kept until the contents of the
shipment have been checked mechanically and electrically. If there is
mechanical damage, notify the nearest Hewlett-Packard office. Keep the
damaged shipping materials (if any) for inspection by the carrier and a
Hewlett-Packard representative. If required, you can find a list of
Hewlett-Packard Sales and Service offices on page 48.
Checking Power Meter Firmware and DSP Revision
Before proceeding, first ensure your HP EPM series power meter has both
the required firmware and DSP revisions for the correct operation of your
HP E-series E9300 power sensor.
On the power meter press , , , .
System
Inputs
More
Service
Version
Firmware Revision
Code (dual channel)
DSP Revision
Code
Figure 3 Power Meter Firmware Version Screen
14
Introduction
Getting Started
First check the section labelled DSP Revision:. Release A.01.11 or later is
required. If your power meter has an earlier release, please contact your
nearest Service Office (listed on page 48) to arrange an upgrade.
Next check the sectio n label led
Main F/W R e v:. Release A1.04.00 or later is
required for single channel meters; release A2.04.00 or later is required fo r
dual channel meters. If your power meter has an earlier release, please
contact your nearest Service Office (listed on page 48) to arrange an
upgrade.
NOTE: You can carry out the firmware upgrade yourself if your power meter h as the required
DSP revision and you have World Wide Web access.
Access http://www.tmo.hp.com/tmo/datasheets/English/HPE4418B.html
(or HPE4419B.html) and click on the Related Info tab. Follow the firmware
downloading instruction s.
15
Introduction
Getting Started
Interconnections
Connect one end of an HP 11730 series sensor cable to the HP E-series
E9300 power sensor and connect the other end of the cable to the power
meter ’s channel i nput. Allow a few seconds for the power meter to
download the power sensor’s calibration table.
NOTE: Ensure power sensors and cables are attached and removed in an indoo r environment.
To carry out a zero and calibration cycle as requested by the power meter
proceed as follows:
• Ensure the HP E-series E9300 power sensor is disconnected from any signal
source. On the power meter, press , (or / ).
During zeroing the wait symbol is displayed.
• When the wait period is complete connect the HP E-series E9300 power sensor
to the power meter’s POWER REF output.
Zero
Zero Zero A Zero B
Cal
• Press (or , / ). The wait symbol is again displayed
Cal Cal Cal A Cal B
during calibration.
On completion the power meter and sensor are ready to connect to the
device under test (DUT).
WARNING: BEFORE CONNECTING THE POWER SENSOR TO OTHER
INSTRUMENTS ensure that all instruments are connected to the protective
(earth) ground. Any interruption of the protective earth grounding will cause a
potential shock hazard that could result in personal injury.
The measurement connector (for connection to DUT) is Type-N (male) for
both HP E9300A and HP E9301A. A torque wrench should be used to
tighten these connectors. Use a 3/4-inch open-end wrench and torque to 12
in-lb (135 Ncm) for the Type-N connector.
Specifications
The specificati ons l ist ed in chapter 3, Specifications and Cha racteristics, are
the performance standards or limits against which the power sensor may be
tested. These specifications are valid ONLY after proper calibration of the
power meter. Refer to the “Calibration Procedure Using HP E-Series Power
Sensors” in your HP EPM series power meter User’s Guide.
16
2
Making Measurements
17
Making Measurements
What You’ll Find
In This Chapter
This Chapter shows you how to use t he HP E-seri es E9300 po wer s ensors to
make power measurements on si gnals with dif ferent modulatio n formats. For
all other operations please refer to y our HP EPM series power meter User’s
Guide.
This chapter contains the follow ing sections:
• “Power Meter Configuration Changes” on page 19
• “Measuring Spread Spectrum and Multitone Signals” on page 20
• “Measuring TDMA Signals” on page 23
• “Measurement Accuracy and Speed” on page 25
18
Making Measurements
Power Meter Configuration Changes
Power Meter Configuration Changes
The HP EPM series power meter recognizes when an HP E-series E9300
power sensor is connect ed. The sensor calibration data is automaticall y re ad
by the power meter. In addition, the HP E-series E9300 power sensors
change the auto-averaging settings used by the power meter. These are also
automatically configured.
Resolution Setting
1234
1114
11416
11
1 4 16 128
1 16 64 128
1114
11216
1 2 16 64
4 16 128 256
32 64 256 256
Sensor Dynamic Range
Upper Range
Lower Range
10 dBm
2 dBm
-4 dBm
-10 dBm
-20 dBm
-30 dBm
-40 dBm
-50 dBm
Maximum
Sensor Power
Minimum
Sensor Power
Figure 4 Auto-averaging Settings
8
32
Number of Averages
NOTE: These values are valid only for the power meter channel connected to the HP E-series
E9300 power sensor and o nly while the sensor is connected. Averaging settings can
also be manually configured. Refer to “Achieving Stable Results with TDMA
Signals” on page 23 if required.
19
Making Measurements
Measuring Spread Spectrum and Multitone Signals
Measuring Spread Spectrum and Multitone Signals
To achieve high data transfer rates within a given bandwidth, many
transmission schemes are based around phase and amplitude (I and Q)
modulation. These include CDMA, W-CDMA and digital television. These
signals are chara cteri zed by t heir ap pea rance on a spect rum an alyzer displ ay
— a high amplitude noise-like signal of bandwidths up to 20 MHz. An
8 MHz bandwidth digital television signal is shown in Figure 5.
Figure 5 Spread Spectrum Signal
Prior to the HP E-series E9300 power sensors, average power measurement
over a wide dynamic range of these signals required either tuned/swept
signal analyzer methods or a dual channel power meter connected to power
sensors, pads and a power splitter.
The diode pair/attenuator/diode pair architecture of the HP E-series E9300
power sensors is ideally suited to the average power measurement of these
signals. The sensors have wide dynamic range (-60 dBm to +20 dBm) and
are bandwidth independent.
Some signal modulation formats such as orthogonal-frequency-division
multiplexing (OFDM) and CDMA have large crest factors. The HP E-series
E9300 power sensors can measure +20 dBm average power even in the
presence of +13 dB peaks as long as the peak pulse duration is less than
10 microseconds.
20
Making Measurements
Measuring Spread Spectrum and Multitone Signals
CDMA Signal Measurements
Figure 6 and Figure 7 show typical results obtained when measuring a
CDMA signal. In these exam ples, the er ror is determined by measuring the
source at the amplitude of interest, with and without CDMA modulation,
adding attenuation until the difference between the two values stops
changing. The CW sensor in Figure 6 uses correction factors to correct for
power levels beyond its square law operating region.
1.2
1
0.8
0.6
Error (dB )
-30 -20 -10 0 10
0.4
0.2
0
0.2
Power (dBm)
20
30
Lower Range Error
Upper Range Error
CW Sensor Error
Figure 6 Wideband CDMA Error of HP E-series E9300 power
sensor versus corrected CW sensor
-30
-20
-10
0.1
0.05
-0.05
0
10
0
20
30
Lower Range Error
Upper Range Error
-0.1
Modulation Error (dB)
-0.15
-0.2
Power (dBm)
Figure 7 CDMA (IS-95A): 9Ch Fwd
(HP E-Series E9300 power
sensor only shown)
21
Making Measurements
Measuring Spread Spectrum and Multitone Signals
Multitone Signal Measurements
In addition to wide dynamic range, the HP E-series E9300 power sensors
also have an exceptionally flat calibration factor versus frequency response
across the entire frequency range as shown in Figure 8. This is ideal for
amplifier intermodul ation dist ortion measurement s where the c omponents of
the two-tone or multitone test signal can be separated by hundreds of MHz.
110 %
105 %
Typical Upper Range
Calibration Factor
110 %
105 %
100 %
Cal Factor
95 %
90 %
0 5 10 15 20
Frequency (GHz)
100 %
Cal Factor
95 %
90 %
0 5 10 15 20
Frequency (GHz)
Ty pical Lowe r Rang e
Calibration Factor
Figure 8 Calibration Factors versus Frequency
Simply select an suitable single calibration factor frequency for your
measurement using the key on the power meter.
Frequency
Cal Fac
22
Making Measurements
System
Inputs
Man
Length
Measuring TDMA Signals
Measuring TDMA Signals
Power Meter and Sensor Operation
The voltages generated by the diode detectors in the power sensor can be
very small. Gain and signal conditioning are required to allow accurate
measurement. This i s a chi eve d us ing a 220 Hz (440 Hz in fast mod e) squ are
wave output from the power me ter to drive a choppe r-ampli fier in th e power
sensor . Digital Sig nal Processi ng (DSP) of the gene rated square wave is used
by the power meter to recover the power sensor output and accurately
calculate the power level.
The chopper-amplifier technique provides noise immunity and allows large
physical distances bet w ee n powe r s ens or and power meter (HP 11730 series
cables available up to 61 metres). Additional averaging helps reduce noise
susceptibility.
Achieving Stable Results with TDMA Signals
The averaging settin gs in the power mete r are designed to re duce noise when
measuring continuous wave (CW) signals. Initial measurement of a pulsed
signal may appear unstabl e with jitter on th e less signifi cant displayed digits.
With pulsed signals the averaging period must be increased to allow
measurement over many cycles of the pulsed signal.
To set the averaging proceed as follows:
NOTE: The example shows the key labels for a single channel power meter. Dual channel
meter are similar, adding only channel identification to the softkey labels.
1 Press , , . Press the softkey to access the
filter menu.
2 The filter setting is displayed under the softkey label. To change this
setting first set manual mode by pressing the softkey to
highlight .
3 Press and use the , , or to set the averaging you
require. Confirm your entry by pressing .
Input Settings
More
Length
Enter
Filter
Mode Man Auto
23
Making Measurements
System
Inputs
Measuring TDMA Signals
NOTE: You should also ensure the filter is not reset when a step increase or decrease in
power is detected by switching the step detection off.
Switch off step detection as follows:
1 Press , , .
2 Press the softkey to access the filter menu.
3 Press to highlight .
Step Det Off On Off
Input Settings
Filter
More
The section “Setting the Range, Resolution and Accuracy” in the HP EPM
series pow er meters Programming Guide shows you how to configure these
parameters using the remote in terface
Achieving Stable Results with GSM Signals
Signals with a pulse repetition frequency (PRF) close to a multiple or
sub-multiple of the 2 20 Hz choppe r-amplif ier sig nal gener ate a be at no te at a
frequency between the PRF and 220 Hz. Control over the filter settings is
again required to obtain stable results.
The PRF of a GSM signal is approximately 217 Hz and thus requires more
averaging than most other TDMA signals. To achieve a stable measurement
use the filter setting proc edures to set the . Experimentally, a
Length
setting of 148 gives optimum results although settings in the order
of 31 or 32 give acceptable results if a faster measurement is required.
Length
24
Making Measurements
System
Inputs
Range
Measurement Accuracy and Speed
Measurement Accuracy and Speed
The power meter has no internal ranges. The only ranges you can set are
those of the HP E-series E9300 power sen sors (a nd other HP E-serie s power
sensors). With an HP E-series E9300 power sensor the range can be set
either automatically or manually. Use autoranging when you are not sure of
the power level you are about to measure.
CAUTION: To prevent damage to your sensor do not exceed the power levels specified in the
section “Maximum Power” on page 30.
Setting the Range
There are two manual settings, “LOWER” and “UPPER”. The LOWER
range uses the more sensitive -60 dBm to -10 dBm path in the HP E-series
E9300 power sensors. The UPPER uses the attenuated path and covers the
range of -10 dBm to +2 0 dBm. T he def aul t is “ AUTO”. In AUTO t he ra nge
crossover value is -10 ±0.5 dBm.
Configure the power meter as follows:
NOTE: The example shows the key labels for a single channel power meter. Dual channel
meters are similar, adding channel identification to the softkey labels.
1 Press , . The current setting is displayed unde r the
softkey.
2 To change this press . A pop up window appears. Use or to
highlight your choice.
To confirm your choice press .
Input Settings
Range
Enter
The section “Setting the Range, Resolution and Accuracy” in the HP EPM
series power meters Programming Guide shows you how to conf i gure the se
parameters using the remote in terface
Measurement Considerations
While autoranging is a good starting point, it is not id eal for all measurements.
Signal conditions such as crest factor or duty cycle may cause the power meter to
select a range which is not the optimum configuration for your specific
25
Making Measurements
Measurement Accuracy and Speed
measurement needs. Signals with average power levels close to the range
switch poin t (-10 ±0.5 dBm) require you to consider your needs for
measurement accuracy and speed. For example, in a pulsed signal
configured as follows:
Characteristic Value
Peak Amplitude -6 dBm
Duty Cycle 25 %
the calculated average power is -12 dBm.
Accuracy
Speed and
Averaging
The value of -12 dBm li es in the lower range of the HP E-series E9300 power
sensor. In autoranging mode (“AUTO”) the HP EPM series power meter
determines the average power level is below -10 dBm and selects the low
power path. However , the peak amplitud e of -6 dBm is beyond the specified,
square law response range of th e low power path diodes.The hig h power path
(-10 dBm to +20 dBm) should be used to ensure a more accurate
measurement of this signal. However, range holding in “UPPER” (the high
power path), for a more accurate measurement, results in consider ably more
filtering.
The same signal also requires that consideration is given to measurement
speed. As shown above, in autorang ing mode the HP EPM series power meter
selects the low power path in the HP E-series E9300 power sensor. With
auto-averaging als o conf igure d, minimal fil teri ng is appl ied. Values of 1 to 4
for average power levels above -20 dBm are used in the low power path.
(Refer to “Auto-averaging Settings” on page 19.)
If the range is held in “UPPER” for a more accuracy, the measurement is
slower . Mo re filt erin g is app lied due to the incre ase in no ise sus cepti bili ty at
the less sensitive are a of th e hi gh power path. Values of 1 to 128 for average
power leve ls less than -10 dBm are used. (Again, refer to “Auto-averaging
Settings” on page 19.) Manually lowering the filter settings speeds up the
measurement but can result in an unwanted level of jitter.
Summary
Attention must be paid to signa ls whose av erage power levels are in the low
power path range whilst thei r peaks are in the high power path ra nge. Y ou can
achieve best accuracy by selecting the high power path or best speed by
selecting the low power path.
26
3
Specifications and Characteristics
27
Specifications and Characteristics
Introduction
Introduction
The HP E-series E9300 power sensors are average, wide dynamic range
power sensors designed for use with the HP EPM series power meters.
These specifications are valid ONLY after proper calibration of the power
meter and apply for continuous wave (CW) signals unless otherwise stated.
Specifications apply over the temperature range 0°C to +55°C unless
otherwise stated.
Specifications quoted over the temperature range 25°C ±10°C apply over
15% to 75% relative humidity and conform to the standard environmental
test conditions as defined in TIA/EIA/IS-97-A and TIA/EIA/IS-98-A
The HP E-series E9300 power sensors have two independent measurement
paths (high and low power paths):
High Power Path: -10 dBm to +20 dBm
Low Power Path: -60 dBm to -10 dBm
1
.
Some specifications are detailed for individual measurement path, with the
automatic switching point at -10 dBm.
Supplemental characteristics, which are shown in italics, are intended to
provide information useful in applying the power sensors by giving typical,
but nonwarranted performance parameters. These characteristics are shown
in italics or denoted as “typical”, “nominal” or “approximate”.
1. TIA is the Telecommunications Industry Association; EIA is the Electronic
Industries Association.
TIA/EIA/IS-97-A is the recommended Minimum Performance Standard for Base
Stations Supporting Dual-Mode Wideband Spread Spectrum Cellular Mobile
Stations.
TIA/EIA/IS-98-A is the recommended Minimum Performance Standard for
Dual-Mode Wideband Spread Spectrum Cellular Mobile Stations.
28
Power Sensor Specifications
Specifications and Characteristics
Power Sensor Specifications
Frequency Range
Connector Type
Maximum SWR
(25°C ±10°C)
Frequency Range
HP E9300A 10 MHz to 18.0 GHz
HP E9301A 10 MHz to 6.0 GHz
Connector
HP E9300A Type - N (m)
HP E9301A Type - N (m)
Frequency SWR
HP E9300A 10 MHz to 30 MHz 1.15
30 MHz to 2 GHz 1.13
2 GHz to 14 GHz 1.19
14 GHz to 16 GHz 1.22
16 GHz to 18 GHz 1.26
HP E9301A 10 MHz to 30 MHz 1.15
30 MHz to 2 GHz 1.13
2 GHz to 6 GHz 1.19
29
Maximum SWR
(0°C to +55°C)
Specifications and Characteristics
Power Sensor Specifications
Frequency SWR
HP E9300A 10 MHz to 30 MHz 1.21
30 MHz to 2 GHz 1.15
2 GHz to 14 GHz 1.20
14 GHz to 16 GHz 1.23
16 GHz to 18 GHz 1.27
HP E9301A 10 MHz to 30 MHz 1.21
30 MHz to 2 GHz 1.15
2 GHz to 6 GHz 1.20
SWR
1.20
Maximum Power
1.15
1.10
1.05
1.00
0 2 4 6 81012141618
Figure 9 Typical SWR 10 MHz to 18 GHz (25°C ±10°C)
Maximum Power
HP E9300A +25 dBm (320 mW) average
+33 dBm peak (2 W) (<10 µsec)
HP E9301A +25 dBm (320 mW) average
+33 dBm peak (2 W) (<10 µsec)
30
GHz
Specifications and Characteristics
Power Sensor Specifications
Power Linearity
After Zero and Calibration at ambient environmental conditions.
Power Level
Linearity
25°C ±10°C
-60 dBm to -10 dBm ±3.0% ±3.5%
-10 dBm to 0 dBm ±2.5% ±3.0%
0 dBm to +20 dBm ±2.0% ±2.5%
% Error
1
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1
-30 -25 -20 -15 -10 -5 0 5 10 15 20
Power (dBm)
Figure 10 Typical Power Linearity at 25°C, after zero and calibration, with
associated Measurement Uncertainty
Linearity
0°C to 55°C
Power Range and Measurement Uncertainty
-30 to
-20 dBm
Measurement
±0.9% ±0.9% ±0.9% ±0.9% ±0.9%
Uncertainty
NOTE: If the temperature changes after calibration and you choose not to re-calibrate the
sensor, Additional Power Linearity Error (next table) should be added t o the Power
Linearity specifications shown above. The typical maximum Additional Power
Linearity error due to temperature change after calibration at 25
changes in temperature, is ±0.15%
For larger changes refer to the following table
-20 to
-10 dBm
-10 to
0dBm
0 to
10 dBm
°C, for small
/°C (valid after zeroing the sensor).
10 to
20 dBm
31
Additional Power Linearity Error
Specifications and Characteristics
Power Sensor Specifications
Additional Power
Power Level
-60 dBm to - 10 dBm ±1.5% ±2.0%
-10 dBm to +10 dBm ±1.5% ±2.5%
+10 dBm to +20 dBm ±1.5% ±2.0%
+20 dBm
Linearity Error
25°C ±10°C
Additional Power
Linearity Error
0°C to 55°C
±2%
-10 dBm
±1%
Measured
Power
-60 dBm
Figure 11 Relative Mode Power Measurement Linearity with
-60 dBm -10 dBm
Reference Power
HP EPM power meter at 25°C ±1 0°C (typical)
±1%
±2%
+20 dBm
Figure 11 shows the typical uncertainty in making a relative power
measurement, using the same power meter channel and same power sensor
to obtain the reference and the measured values. It assumes that negligible
changes in frequency and mismatch error occur when transitioning from the
power level used as the reference to the power level being measured.
32
Specifications and Characteristics
Power Sensor Specifications
Switching Point
Zero Set, Zero Noise and Measurement Noise
The HP E-series E9300 power sensors have two paths, a low power path
covering -60 dBm to -10 dBm, and a high power path covering -10 dBm to
+20 dBm. The power meter aut omatically selects th e proper power level path .
To avoid unnecessary switching when the power level is near the -10 dBm
point, Switching Point Hysteresis has been added. This hysteresis causes the
low power path to remain selected until approximat ely -9.5 dBm as the po wer
level is increas ed, abo ve this power the hi gh power path is s elect ed.The h igh
power path remains selected until approximately -10.5 dBm as the signal
level decreases, below this power the low power path is selected.
Error
Offset at Switch Point ≤±0.
Switching Point Hysteresis
Conditions
a
(RH)
Lower Range 15% to 75% 500 pW
(-60 to -10 dBm)
75% to 95% 500 pW
Zero
Set
5% (≤±0.02 dB) typical
0.5 dB typical
Zero
Drift
Measurement
b
Noise
150 pW 700 pW
4,000 pW 700 pW
c
Upper Range 15% to 75% 500 nW
(-10 to +20 d Bm)
a.RH is the abbreviation for Relative Humidity.
b.Within 1 hour after zero set, at a constant temperature, after a 24 hour
warm-up of the power meter with sensor connected.
c.The number of averages at 16 for Normal mod e and 32 for x2 mode, at a constan t
temperature, measured over a one minute interval and two standard deviations.
75% to 95% 500 nW
150 nW 500 nW
3,000 nW 500 nW
33
Specifications and Characteristics
Power Sensor Specifications
Settling Time
In FAST mode (using Free Run trigger), for a 10 dB decreasing power step,
the settling time is:
Time
HP E4418B
HP E4419B
a.When a power step crosses the auto-range switch point of the
sensor, add 25 ms.
Number of
Averages
Settling Timea (s)
1 2 4 8 16 32 64 128 256 512 1,024
0.07 0.12 0.21 0.4 1.0 1.8 3.3 6.5 13 27 57
(Normal Mode)
Settling Timea (s)
0.04 0.07 0.12 0.21 0.4 1.0 1.8 3.4 6.8 14.2 32
(x2 Mode)
a.Manual filter, 10 dB decreasing power step (not across the switching point)
Normal Mode
Maximum Sensor Power
70 ms
210 ms
400 ms
70 ms
Typical
120 ms
Settling
Times
6.5 s
Minimum Sensor Power
1 s
1 s
13 s
+10 dBm
+2 dBm
-4 dBm
-10 dBm
-20 dBm
-30 dBm
-40 dBm
-50 dBm
10 ms
20 ms
a
a
Sensor
Dynamic
Range
X2 Mode
Maximum Sensor Power
40 ms
120 ms
210 ms
400 ms
40 ms
Typical
Settling
Times
70 ms
400 ms
3.4 s
6.8 s
Minimum Sensor Power
+10 dBm
+2 dBm
-4 dBm
-10 dBm
-20 dBm
-30 dBm
-40 dBm
-50 dBm
Sensor
Dynamic
Range
Figure 12 Autofilter, default resolution, 10 dB decreasing power step
(not across the switching point)
34
Specifications and Characteristics
Power Sensor Specifications
Calibration Factor and Reflection Coefficient
Calibration Factor (CF) and Reflection Coefficient (Rho) data are provided
on a data sheet included with the power sensor. This data is unique to each
sensor. If you have more than one sensor, match the serial number on the
data sheet with the ser ial nu mber on the powe r senso r you are usi ng. The CF
corrects for the frequency response of the sensor. HP EPM series power
meters automatically read the CF data stored in the sensor and use it to make
the corrections.
Reflection Coefficient (Rho, or ρ) relates to the SWR according to the
following formula:
SWR
1 ρ+
------------=
1 ρ–
Maximum uncertainties of the CF data are listed in the following tables.
As the HP E-series E9300 power sensors have two independent
measurement paths (high and low power paths), there are two calibration
factor uncertainty tables for each sensor. The uncertainty analysis for the
calibration of the sensors was done in accordance with ISO Guide. The
uncertainty data reported on the calibration certificate is the expanded
uncertainty with a 95% confidence level and a coverage factor of 2.
HP E9300A Cal Factor Uncertainty
(Low Power Path,
-60 to -10 dBm)
Frequency
10 MHz to 30MHz ±1.8% ±2.2%
30 MHz to 500 MHz ±1.6% ±2.0%
500MHz to 1.2GHz ±1.8% ±2.5%
1.2GHz to 6GHz ±1.7% ±2.0%
6 GHz to 14 GHz ±1.8% ±2.0%
14 GHz to 18 GHz ±2.0% ±2.2%
Uncertainty %
(25°C±10°C)
Uncertainty %
(0°C to 55°C)
35
HP E9300A Cal
Factor Uncertainty
(High Power Path,
-10to +20dBm)
HP E9301A Cal Factor Uncertainty
(Low Power Path,
-60 to -10 dBm)
Specifications and Characteristics
Power Sensor Specifications
Frequency
10 MHz to 30MHz ±2.1% ±4.0%
30 MHz to 500 MHz ±1.8% ±3.0%
500MHz to 1.2GHz ±2.3% ±4.0%
1.2GHz to 6GHz ±1.8% ±2.1%
6 GHz to 14 GHz ±1.9% ±2.3%
14 GHz to 18 GHz ±2.2% ±3.3%
Frequency
Uncertainty %
(25°C±10°C)
Uncertainty %
(25°C±10°C)
Uncertainty %
(0°C to 55°C)
Uncertainty %
(0°C to 55°C)
HP E9301A Cal
Factor Uncertainty
(High Power Path,
-10to +20dBm)
10 MHz to 30MHz ±1.8% ±2.2%
30 MHz to 500 MHz ±1.6% ±2.0%
500MHz to 1.2GHz ±1.8% ±2.5%
1.2GHz to 6GHz ±1.7% ±2.0%
Frequency
10 MHz to 30MHz ±2.1% ±4.0%
30 MHz to 500 MHz ±1.8% ±3.0%
500MHz to 1.2GHz ±2.3% ±4.0%
1.5GHz to 6GHz ±1.8% ±2.1%
36
Uncertainty %
(25°C±10°C)
Uncertainty %
(0°C to 55°C)
Specifications and Characteristics
Power Sensor Specifications
General
References
Physical Characteristics
Net Weight 0.18 kg (0.4 lb)
Length: 130 mm (5.1 in)
Dimensions
Environment
Temperature -55°C to +75°C
Relative Humidity <95% at 40°C
Altitude <15,240 metres (50,000 feet)
Width: 38 mm (1.5 in)
Height: 30 mm (1.2 in)
Storage and Shipment
The sensor should be stored in a clean, dry
environment
TIA is the Telecommunications Industry Association; EIA is the Electronic
Industries Association.
TIA/EIA/IS-97-A is the Recommended Minimum Performance Standards
for Base Stations Supporting Dual-Mode Wideband Spread Spectrum
Cellular Mobile Stations.
TIA/EIA/IS-98-A is the Recommended Minimum Performance Standards
for Dual-Mode Wideband Spread Spectrum Cellular Mobile Stations.
37
Specifications and Characteristics
Power Sensor Specifications
38
4
Service
39
Service
General Information
General Information
This chapter contains information about general maintenance, performance
tests, troubleshooting and repair of HP E-series E9300 power sensors.
Cleaning
Use a clean, damp cloth to clean the body of the HP E-series E9300 power
sensor.
Connector Cleaning
CAUTION: The RF connector beads deteriorate when contacted by hydrocarbon compounds
such as acetone, trichloroethylene, carbon tetrachloride, and benzene.
CAUTION: Clean the connector only at a static free workstation. Electrostatic discharge to the
center pin of the connector will render the power sensor inoperat ive.
Keeping in mind its flammable nature; a solution of pure isopropyl or ethyl
alcohol can be used to clean the connector.
Clean the connector face using a cotton swab dip ped i n i sop ropyl alcohol. If
the swab is too big use a round wooden toothpick wrapped in a lint free
cotton cloth dipped in is opr opyl alcohol. Refer to HP Application Not e 326,
Principles of Microwave Connector Care (5954-1566) or Microwave
Connector Care (08510-90064) for proper cleaning methods.
40
Performance Test
Performance Test
Standing Wave Ratio (SWR) and Reflection Coefficient (Rho) Performance Test
This section does not establish preset SWR test procedures since there are
several test methods and different equipment available for testing the SWR
or reflection c oeff icient. Therefore , the a ctual acc uracy of the tes t equipment
must be accounted for when measuring against instrument specifications to
determine a pass or fail condition. The test system used must not exceed the
system Rho uncertainties shown in Table 1 when testing the HP E9300A, or
in Table 2 when testing the HP E9301A.
Table 1 Power Sensor SWR and Reflection Coefficient for the HP E9300A
Service
Frequency System Rho
Uncertainty
10 MHz to 30 MHz ±0.010 0.070
30 MHz to 2 GHz ±0.010 0.065
2 GHz to 14 GHz ±0.010 0.078
14 GHz to 16 GHz ±0.010 0.099
16 GHz to 18 GHz ±0.010 0.119
Table 2 Power Sensor SWR and Reflection Coefficient for the HP E9301A
Frequency System Rho
Uncertainty
10 MHz to 30 MHz ±0.010 0.070
30 MHz to 2 GHz ±0.010 0.065
2 GHz to 6 GHz ±0.015 0.078
Actual
Measurement
Actual
Measurement
Maximum
Rho
Maximum
Rho
41
Service
Replaceable Parts
Replaceable Parts
Table 3 is a list of replaceable parts. Figure 13 is the illustrated parts
breakdown (IPB) that identifies all of the replaceable parts. To order a part,
quote the Hewlett-Packard part number, specify the quantity required, and
address the order to the nearest Hewlett-Packard office.
NOTE: Within the USA, it is better to order directly from the HP Parts Cen ter in R oseville,
California. Ask your nearest HP of fice for information and forms for the “Direct Mail
Order System.” Also your nearest HP office can supply toll free telephone numbers
for ordering parts and supplies.
42
Service
Replaceable Parts
Figure 13 Illustrated Parts Break down
43
Service
Replaceable Parts
Table 3 Replaceable Parts
Reference
Designation
A1/A2
E9300A
A1/A2
E9300A
A1/A2
E9301A
A1/A2
E9301A
CHASSIS PARTS
MP1 5041-9160 2 SHELL-PLASTIC
MP2 5041-9160 SHELL-PLASTIC
MP3 08481-20011 2 CHASSIS
MP4 08481-20011 CHASSIS
MP8 08481-00002 2 SHIELD
HP Part
Number
E9300-60006 1 SENSOR MODULE
E9300-69006 1 RESTORED SENSOR
E9301-60007 1 SENSOR MODULE
E9301-69007 1 RESTORED SENSOR
Qty Description
MODULE
MODULE
MP9 08481-00002 SHIELD
MP26 E9300-80001 1 LABEL, ID E9300A
MP26 E9301-80001 1 LABEL, ID E9301A
MP27 7121-7389 2 LABEL, POWER SENSOR
MP30 7121-7388 1 LABEL, CAL/ESD
MP31 00346-80011 1 LABEL, CAUTION
44
Service
Service
Service
Service instructions consist of principles of operation, troubleshooting, and
repairs.
Principles of Operation
The A1 Bulkhead assembly provides a 50 ohm load to th e RF signal appl ied
to the power s ensor. A dual range GaAs diode pair/a ttenuator/diode pair
assembly in the bulkhead rectifies the applied RF to produce dc voltages
(high and low rang es) whic h vary wi th the RF power a cross t he 50 oh m load.
Thus the voltage varies with the RF power dissipated in the load.
The low-level dc voltages from the bulkhead assembly are amplified before
they are transferr ed on standard cables to the power meter. The amplification
is provided by an input amplifier assembly which consists of a chopper
(sampling gate) and an input amplifier. The chopper circuit converts the dc
voltages to ac voltages. The chopper is controlled by a 220 Hz square wave
generated by the power meter. The amplitude of the sampling gate output is
a 220 Hz square wave which varies with the RF power input. The 220 Hz ac
output is applied to an amplifier which provides the input to the power
meter.
The HP EPM series p ower met er automatically dete ct s when an HP E-series
E9300 power sensor is connected and downloads the correction data from
the sensor’s EEPROM. The auto-averaging settings are also configured
automatically for use with HP E-series E9300 power sensors. This
configures the power meter to operate over the -60 dBm to +20 dBm power
range with that particular sensor’s unique correction data applied.
Troubleshooting
Trouble shoo ting infor mation is inte nded t o first iso late the power sens or, the
cable, or the power meter as the defective component. When the power
sensor is isolate d, an approp riate Se nsor Module mus t be used for repa ir. See
Table 3 on page 44.
45
Service
Service
If error message 24 1 or 310 is indicated on t he power met er, suspec t a failed
power sensor. If no error message is displayed, but a problem occurs when
making a measurement, try replacing the cable from the power met er to the
power sensor . I f the proble m still exists , try using a di ffe rent power sensor to
determine if the problem is in the power meter or in the power sensor.
CAUTION: Electrostatic discharge will render the power sensor inoperative. Do not, under any
circumstances, open the power sensor unless you and the power sensor are in a static
free environment.
Repair of Defective Sensor
There are no serviceable parts inside the HP E-series E9300 power sensors.
If the sensor is defective, replace the entire “module” with the appropriate
“Restored Sensor Module.” See Table 3.
46
Service
Service
Disassembly Procedure
Disassemble the power sensor by performing the following steps:
CAUTION: Disassemble the power sensor only in a static free workstation. Electrostatic
discharge renders the power sensor inoperative.
Figure 14 Removing Power Sensor S hell
1 At the rear of the power sensor, insert the blade of a screwdriver between the
plastic shells (See Figure 14). To prevent damage to the plastic shells use a
screwdriver blade as wide as the slot between the two shells.
2 Pry alternately at both sides of the connector J1 until the plastic shells are apart.
Remove the shells and the magnetic shields.
Reassembly Proce dure
1 Replace the magnetic shields and the plastic shells as shown in Figure 13. Snap
the plastic shells together.
47
Service
Service
Sales and Service Offices
If you need technical assistance with a Hewlett-Packard test and
measurement product or application please contact the Hewlett-Packard
office or distributor in your country.
Asia Pacific:
Hong Kong: (852) 2599 7070
India: (91/11) 6906156/6826262
Japan:
Hewlett-Packard Japan Ltd.
Measurement Assistance Center
9-1, Takakura-Cho, Hachioji-Shi
Yokyo, 192-8510
81-426-56-7832
Korea: (82-2) 769-0800
Malaysia: (6-03) 291-0213
Philippines: (63-2) 814-1083
Singapore: (1800) 375 8100
Taiwan: 080-212-535
Thailand: (088) 225-802
For countries in Asia Pacific not listed contact:
Hewlett-Packard Asia Pacific Ltd
17-21/F Shell Tower, Times Square,
1 Matheson Street, Causeway Bay,
Hong Kong
(852) 2599 7070
Australia/New Zealand:
Hewlett-Packard Australia Ltd.
31-41 Joseph Street, PO Box 221,
Blackburn, Victoria 3130
1-800-629-485
48
Service
Service
Hewlett-Packard (New Zealand) Ltd.
186-190 Willis Street, PO Box 9443
Wellington
0800-738-378
Canada:
Hewlett-Packard (Canada) Ltd.
5150 Spectrum Way,
Mississauga, ON
L4W 5G1
1-877-894-4414
Europe:
In Europe, Africa and Middle East please call your local HP sales office or
representative:
Austria: (01) 25000-7171
Belgium: (32/2) 778 3417
Czech Republic: +420 2 61307458
Denmark: 45 99-15-15
Finland: 358-9-8872 2100
France: 01 69 29 41 14
Germany: (0180) 524-63 33
Greece: 01 726 40 25
Ireland: 01 615 8222
Israel: 03 53 80 377
Italy: 39 02 9212 2241
Netherlands: 020-547 6669
Norway: +47 2273 5759
Poland: 48-22-72300066
South Africa: +27-11-806 1000
49
Service
Service
Spain: 34 91 631.13.23
Sweden: (08) 444 2525
Switzerland: German: (01) 735 72 00 French: (022) 780 4361
United Kingdom: 01344 366666
For Countries in Europe, Africa and Middle East not listed, contact:
Hewlett-Packard
International Sales Europe
Geneva, Switzerland
+41-22-780-4111
Latin America:
Brazil: (55-11) 7297-8600
Mexico: (52-5) 258-4392
For Countries in Latin America not listed, contact:
Hewlett-Packard
Latin American Region Headquarters
5200 Blue Lagoon Drive
9th Floor, Miami,
Florida 33126
(305) 167 4245/4220
United States:
Hewlett-Packard Company
Test and Measurement Organization
5301 Stevens Creek Blvd.
Bldg. 51L-SC
Santa Clara, CA 95052-8059
1 800 452 4844
In any corresponde nce or telephone conversations, refer to the power sensor
by its model number and full serial number. With this information, the HP
representative can quickly determine whether your unit is still within its
warranty pe riod.
50
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